Improvement in sfring-bttts



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THEODORE FREDE RICKS, OF NEWARK, NEW JERSEY.

Letters Patent No. 86,978, dated February 16, 1869.

IMPROVEMENT IN SIl?RIN'G--BU'TS.`

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it ma/y concern:

Be it known that I, 'lnR'oDoRR FRnDnRroKs'of Newark, inthe county of Essex, and State of New Jersey, have invented an Improved Spring Door-Hinge;

and I do hereby declare that the following is a full andend fast to the outer end of the tube.

. When the door is opened, and let go, the spring reacts and closes it.

A rubber spring may be used in the place of the spiral spring, (Figures 2 and 4 show the use of the rubber sprng,) if in sonlecases it shall be preferred. Therefore,

What I olaim as m'y invention, and desire to secure -by Letters Patent, is v l The construction of the but, with the eases A A,

and the spring acting in them, substantially as and for the purpose specified.

THEODORE FREDERICKS. Witnesses: A

HORACE HARRIS,

S.y W. CLARK. 

